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Borrowings - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Debt Instrument [Line Items]
Total Long-term debt, net	$ 1,201,245	$ 2,144,167
Less: Deferred Financing Fees	(2,535)	(4,998)
Other	0	36
Term Loan Facility
Debt Instrument [Line Items]
Total Long-term debt, net	400,000		$ 1,500,000
Senior Notes, Series A
Debt Instrument [Line Items]
Total Long-term debt, net	$ 190,000	190,000
Stated interest rate	4.27%
Senior Notes, Series B
Debt Instrument [Line Items]
Total Long-term debt, net	$ 180,000	180,000
Stated interest rate	4.42%
Senior Notes, Series C
Debt Instrument [Line Items]
Total Long-term debt, net	$ 130,000	130,000
Stated interest rate	4.52%
New Credit Agreement
Debt Instrument [Line Items]
Total Long-term debt, net	$ 303,780	0
Revolving Credit Facility
Debt Instrument [Line Items]
Total Long-term debt, net	$ 0	$ 149,129
Line of Credit | LIBOR | Minimum | Revolving Credit Facility | Term Loan Facility
Debt Instrument [Line Items]
Stated interest rate	3.05%
Line of Credit | LIBOR | Minimum | Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate		1.38%
Line of Credit | LIBOR | Maximum | Revolving Credit Facility | Term Loan Facility
Debt Instrument [Line Items]
Stated interest rate		3.71%
Line of Credit | LIBOR | Maximum | Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate		3.47%

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